Miracle concrete: the great modern industry (1909)
Miracle Pressed Stone Co. · Miracle Pressed Stone Co. · leaf 122
being filled, and must be unlocked before tryingto turn. TURNING. Turn the mixer at a moderate gait, so that it would makeeight or ten revolutions per minute. Five or six revolutions, dry,thoroughly mix the materials, as each revolution turns the mate-rials over three times. This means fifteen to… … ii 4 ft Fig. 4. The turning is simple and easily accomplished, 109 with just enough water to wet the batch, this amount having beendetermined by experiment. So it will be seen that the degree ofmoisture can always be kept uniform. Compare the above method with hand mixing, three times dryand three…
